package com.wufeng.springcloud.service;

import cn.hutool.core.util.IdUtil;
import com.netflix.hystrix.contrib.javanica.annotation.HystrixCommand;
import com.netflix.hystrix.contrib.javanica.annotation.HystrixProperty;
import org.springframework.stereotype.Service;

import java.util.concurrent.TimeUnit;

@Service
public class PaymentService {

    public String paymentInfo_OK(Integer id) {
        return "线程池：" + Thread.currentThread().getName() + "paymentInfo is ok" + id + "\t☺";
    }

    @HystrixCommand(fallbackMethod = "paymentInfo_TimeOutHandler", commandProperties = {
            @HystrixProperty(name = "execution.isolation.thread.timeoutInMilliseconds", value = "2000")
    })
    public String paymentInfo_TimeOut(Integer id) {
//        int t = 10 / 0;
        try {
            TimeUnit.SECONDS.sleep(3);
        } catch (InterruptedException e) {
            e.printStackTrace();
        }
        return "线程池：" + Thread.currentThread().getName() + "paymentInfo is timeout" + id + "\to(╥﹏╥)o";
    }

    public String paymentInfo_TimeOutHandler(Integer id) {
        return "线程池：" + Thread.currentThread().getName() + "服务超时或者服务报错：" + "\to(╥﹏╥)o";
    }

    @HystrixCommand(fallbackMethod = "paymentCircuitBreaker_fallback", commandProperties = {
            // 是否开启断路器
            @HystrixProperty(name = "circuitBreaker.enabled", value = "true"),
            // 请求次数
            @HystrixProperty(name = "circuitBreaker.requestVolumeThreshold", value = "10"),
            // 时间窗口
            @HystrixProperty(name = "circuitBreaker.sleepWindowInMilliseconds", value = "10000"),
            // 失败率达到多少
            @HystrixProperty(name = "circuitBreaker.errorThresholdPercentage", value = "60")
    })
    public String paymentCircuitBreaker(Integer id) {
        if (id < 0) {
            throw new RuntimeException("==== id 不能为负数");
        }
        String uuid = IdUtil.randomUUID().toString();
        return Thread.currentThread().getName() + "\t" + "调用成功，流水号为：" + uuid;
    }

    public String paymentCircuitBreaker_fallback(Integer id) {
        return "==== id 不能为负数，请稍后再试o(╥﹏╥)o，id : " + id;
    }

}
